/* Sunnova-style battery duration calculator */
.bdc-sun-app { font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, 'Helvetica Neue', Arial; color:#0f172a; }
.bdc-sun-title { font-size:1.5rem; font-weight:700; margin:0; }
.bdc-sun-sub { color:#475569; margin:.25rem 0 1rem; }

.bdc-sun-row { display:grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap:.75rem; align-items:end; margin-bottom:1rem; }
@media (max-width: 960px){ .bdc-sun-row { grid-template-columns: 1fr 1fr; } }

.bdc-sun-field { display:flex; flex-direction:column; }
.bdc-sun-label { font-size:.9rem; color:#334155; margin-bottom:.25rem; }
.bdc-sun-select, .bdc-sun-number { padding:.5rem .6rem; border:1px solid #e2e8f0; border-radius:.6rem; font-size:1rem; background:#fff; }
.bdc-sun-help { font-size:.75rem; color:#64748b; margin-top:.15rem; }

.bdc-sun-metric { background:#fff; border:1px solid #e2e8f0; border-radius:.8rem; padding:.6rem .8rem; }
.bdc-sun-mt { font-size:.75rem; color:#64748b; }
.bdc-sun-mv { font-weight:700; font-size:1.1rem; }
.bdc-sun-emph { border-color:#0ea5e9; box-shadow: 0 0 0 2px rgba(14,165,233,.08) inset; }

.bdc-sun-card { background:#fff; border:1px solid #e2e8f0; border-radius:1rem; margin-bottom:.8rem; overflow:hidden; }
.bdc-sun-acc { width:100%; text-align:left; background:#f8fafc; border:none; border-bottom:1px solid #e2e8f0; padding:.8rem 1rem; font-weight:600; cursor:pointer; display:flex; justify-content:space-between; align-items:center; }
.bdc-sun-acc-title { color:#ffffff; }
.bdc-sun-acc-toggle { color: #fff; font-weight: 700; font-size: 22px; position: relative; top: -3px; }

.bdc-sun-list { padding:.6rem .8rem; }
.bdc-sun-list.is-collapsed { display:none; }

.bdc-sun-checkrow { display:grid; grid-template-columns:auto 1fr auto; gap:.6rem; align-items:center; padding:.4rem .3rem; border-radius:.5rem; }
.bdc-sun-checkrow:hover { background:#f8fafc; }
.bdc-sun-checkrow input[type="checkbox"]{ transform: scale(1.1); }
.bdc-sun-checklabel { font-size:.95rem; }
.bdc-sun-kwh { font-size:.85rem; color:#475569; }
.bdc-sun-selectall { border-bottom:1px dashed #e2e8f0; margin-bottom:.3rem; padding-bottom:.5rem; font-weight: 600; background-color: #f4f4f4; }

.bdc-sun-note { font-size:.8rem; color:#475569; margin-top:.5rem; }